- The IBJJF requires a practitioner remain a purple belt for a minimum of 1.5 years. Purple belt is the intermediate adult ranking in Brazilian jiu-jitsu. The purple belt level practitioner has gained a large amount of knowledge, and purple belts are generally considered qualified to instruct lower-ranked students. In other martial arts, students with a similar amount of experience are often ranked as a black (instructor) level belt. The IBJJF requires student to be at least 16 years old and recommends they have spent a minimum of two years ranked as a blue belt to be eligible for a purple belt, with slightly different requirements for those graduating directly from the youth belts.
